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CeO/GCE 的制备及其用于对苯二酚电化学传感的研究。

Fabrication of CeO/GCE for Electrochemical Sensing of Hydroquinone.

机构信息

Department of Chemistry, Medi-Caps University, AB Road, Pigdamber, Rau, Indore 453331, M.P., India.

Department of Chemistry, M.M.D.C, Moradabad, M.J.P. Rohilkhand University, Bareilly 244001, U.P., India.

出版信息

Biosensors (Basel). 2022 Oct 8;12(10):846. doi: 10.3390/bios12100846.

DOI:10.3390/bios12100846
PMID:36290983
原文链接:https://pmc.ncbi.nlm.nih.gov/articles/PMC9599135/
Abstract

Hydroquinone is a widely used derivative of phenol which has a negative influence on human beings and the environment. The determination of the accurate amount of hydroquinone is of great importance. Recently, the fabrication of an electrochemical sensing device has received enormous attention. In this study, we reported on the facile synthesis of cerium dioxide (CeO) nanoparticles (NPs). The CeO NPs were synthesized using cerium nitrate hexahydrate as a precursor. For determining the physicochemical properties of synthesized CeO NPs, various advanced techniques, viz., powder X-ray diffraction (PXRD), scanning electron microscopy (SEM), energy-dispersive X-ray spectroscopy (EDX), and X-ray photoelectron spectroscopy (XPS), were studied. Further, these synthesized CeO NPs were used for the modification of a glassy carbon electrode (CeO/GCE), which was utilized for the sensing of hydroquinone (HQ). A decent detection limit of 0.9 µM with a sensitivity of 0.41 µA/µM cm was exhibited by the modified electrode (CeO/GCE). The CeO/GCE also exhibited good stability, selectivity, and repeatability towards the determination of HQ.

摘要

对苯二酚是一种广泛使用的苯酚衍生物，对人类和环境有负面影响。准确测定对苯二酚的含量非常重要。最近，电化学传感装置的制备引起了极大的关注。在本研究中，我们报道了一种简便的二氧化铈（CeO）纳米粒子（NPs）的合成方法。CeO NPs 是使用硝酸铈六水合物作为前体制备的。为了确定合成的 CeO NPs 的物理化学性质，研究了各种先进技术，例如粉末 X 射线衍射（PXRD）、扫描电子显微镜（SEM）、能谱（EDX）和 X 射线光电子能谱（XPS）。进一步，将这些合成的 CeO NPs 用于修饰玻碳电极（CeO/GCE），用于检测对苯二酚（HQ）。修饰电极（CeO/GCE）表现出良好的检测限为 0.9 µM，灵敏度为 0.41 µA/µM cm。CeO/GCE 对 HQ 的测定还表现出良好的稳定性、选择性和重现性。

https://cdn.ncbi.nlm.nih.gov/pmc/blobs/e67b/9599135/1dba11efe4c7/biosensors-12-00846-g009.jpg
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